Derivative Financial Instruments (Details 3) (USD $)	3 Months Ended
	May 02, 2015		May 03, 2014
Net after-tax derivative activity recorded in accumulated other comprehensive income (loss)
Beginning balance gain (loss)	$ 7,157,000		$ (113,000)
Net losses from changes in cash flow hedges	(926,000)		(2,058,000)
Net (gains) losses reclassified to earnings (loss)	(1,935,000)		504,000
Ending balance gain (loss)	4,296,000		(1,667,000)
Foreign exchange currency cash flow hedge unrealized gain to be recognized in cost of product sales or other income over the following 12 months	4,400,000
Cash flow hedges | Cost of sales
Gains (losses) before taxes recognized on the derivative instruments designated as cash flow hedges in OCI and net earnings (loss)
Loss recognized in OCI	(1,147,000)		(2,572,000)
Gain (loss) reclassified from accumulated OCI into earnings (loss)	1,750,000	[1]	(494,000)	[1]
Cash flow hedges | Other income/expense
Gains (losses) before taxes recognized on the derivative instruments designated as cash flow hedges in OCI and net earnings (loss)
Loss recognized in OCI	(148,000)		(107,000)
Gain (loss) reclassified from accumulated OCI into earnings (loss)	$ 486,000	[1]	$ (31,000)	[1]

[1] The ineffective portion was immaterial during the three months ended May 2, 2015 and May 3, 2014 and was recorded in net earnings (loss) and included in interest income/expense.